Examples with IvParameterSpec javax.crypto.spec.IvParameterSpec used on opensource projects

Example 41 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project UltimateAndroid by cymcsg.

the class TripleDES method decrypt.

public static String decrypt(byte[] message) throws Exception {
    byte[] values = Base64decodingByte(message, 0);
    final MessageDigest md = MessageDigest.getInstance("SHA-1");
    final byte[] digestOfPassword = md.digest(token.getBytes("utf-8"));
    final byte[] keyBytes = copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j < 8; ) {
        keyBytes[k++] = keyBytes[j++];
    }
    final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
    String s1 = "12345678";
    byte[] bytes = s1.getBytes();
    final IvParameterSpec iv = new IvParameterSpec(bytes);
    final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
    decipher.init(Cipher.DECRYPT_MODE, key, iv);
    final byte[] plainText = decipher.doFinal(values);
    return new String(plainText, "UTF-8");
}

Example 42 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project SeaStar by 13120241790.

the class AESUtils method Decrypt.

// 解密
public static String Decrypt(String content) throws Exception {
    try {
        SecretKeySpec skeySpec = toKey(defaultPwd);
        Cipher cipher = Cipher.getInstance(selectMod(type));
        IvParameterSpec iv = new IvParameterSpec(IV.getBytes());
        if (isPwd == false) {
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
        } else {
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        }
        byte[] encrypted1 = Base64.decode(content, "UTF-8").getBytes();
        try {
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original);
            return originalString;
        } catch (Exception e) {
            System.out.println(e.toString());
            return null;
        }
    } catch (Exception ex) {
        System.out.println(ex.toString());
        return null;
    }
}

Example 43 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project SeaStar by 13120241790.

the class BackAES method encrypt.

/******************************** 方法一，密匙必须为16位 **********************************************/
// 加密
public static byte[] encrypt(String sSrc, String sKey, int type) {
    byte[] encrypted = null;
    try {
        sKey = toMakekey(sKey, pwdLenght, val);
        Cipher cipher = Cipher.getInstance(selectMod(type));
        byte[] raw = sKey.getBytes();
        SecretKeySpec skeySpec = new SecretKeySpec(raw, WAYS);
        // 使用CBC模式，需要一个向量iv，可增加加密算法的强度
        IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
        if (isPwd == false) {
            // ECB 不用密码
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        } else {
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        }
        encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
        // 此处使用BASE64做转码。
        return Base64.encode(encrypted);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    // 此处使用BASE64做转码。
    return null;
}

Example 44 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project nhin-d by DirectProject.

the class PKCS11Commands method exportPrivateKey.

@Command(name = "ExportPrivateKey", usage = EXPORT_PRIVATE_KEY)
public void exportPrivateKey(String[] args) {
    final String alias = StringArrayUtil.getRequiredValue(args, 0);
    final String wrapperAlias = StringArrayUtil.getRequiredValue(args, 1);
    final String file = StringArrayUtil.getOptionalValue(args, 2, alias + "-privKey.der");
    try {
        final KeyStore ks = mgr.getKS();
        // get the wrapper key
        final Key wrapperKey = mgr.getKey(wrapperAlias);
        if (wrapperKey == null) {
            System.out.println("Wrapper key with name " + wrapperKey + " does not exist.");
            return;
        }
        if (!ks.containsAlias(alias)) {
            System.out.println("Private key with name " + alias + " does not exist.");
            return;
        }
        final PrivateKey privKey = (PrivateKey) ks.getKey(alias, "".toCharArray());
        if (privKey == null) {
            System.out.println("Key name " + alias + " does not contain a private key");
            return;
        }
        // the algorithm used to wrap the key depends on the key type
        Cipher myWrapper = null;
        if (wrapperKey.getAlgorithm().startsWith("AES")) {
            myWrapper = Cipher.getInstance("AES/CBC/PKCS5Padding", ks.getProvider().getName());
            AlgorithmParameters mAlgParams = null;
            try {
                mAlgParams = AlgorithmParameters.getInstance("IV", ks.getProvider().getName());
                mAlgParams.init(new IvParameterSpec(AbstractPKCS11TokenKeyStoreProtectionManager.IV_BYTES));
            } catch (Exception e) {
            }
            if (mAlgParams == null)
                myWrapper.init(Cipher.WRAP_MODE, wrapperKey, new IvParameterSpec(AbstractPKCS11TokenKeyStoreProtectionManager.IV_BYTES));
            else
                myWrapper.init(Cipher.WRAP_MODE, wrapperKey, mAlgParams);
        } else if (wrapperKey.getAlgorithm().startsWith("RSA")) {
            myWrapper = Cipher.getInstance("RSA/ECB/NoPadding", ks.getProvider().getName());
            myWrapper.init(Cipher.WRAP_MODE, wrapperKey);
        }
        byte[] wrappedKey = null;
        try {
            wrappedKey = myWrapper.wrap(privKey);
        } catch (Exception e) {
            System.out.println("Private key with name " + alias + " could not be extracted.  Your hardware may not allow exporting of private keys or " + "attributes on the key may not allow the key to be exported.  \r\nError message: " + e.getMessage());
            e.printStackTrace();
            return;
        }
        final File fl = new File(file);
        FileUtils.writeByteArrayToFile(fl, wrappedKey);
        System.out.println("Wrapped private key written to file " + fl.getAbsolutePath());
    } catch (Exception e) {
        e.printStackTrace();
        System.err.println("Failed to export private key: " + e.getMessage());
    }
}

Example 45 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project nhin-d by DirectProject.

the class AbstractPKCS11TokenKeyStoreProtectionManager method wrapWithSecretKey.

/**
	 * {@inheritDoc}}
	 */
@Override
public byte[] wrapWithSecretKey(SecretKey kek, Key keyToWrap) throws CryptoException {
    final IvParameterSpec iv = new IvParameterSpec(IV_BYTES);
    try {
        final Cipher wrapCipher = Cipher.getInstance(WRAP_ALGO, ks.getProvider().getName());
        wrapCipher.init(Cipher.WRAP_MODE, kek, iv);
        return wrapCipher.wrap(keyToWrap);
    } catch (Exception e) {
        throw new CryptoException("Failed to wrap key: " + e.getMessage(), e);
    }
}